Secret Empire has a terrible legacy. The event's build-up kicked off in earnest with Steve Rogers: Captain America, a book that launched back in May 2016. This comic dropped a bombshell on readers: Captain America was an agent of Hydra, eschewing freedom and democracy for fascism. The book revealed how all this occurred, including how Rogers took control of SHIELD and enacted a plan that allowed him to take over the United States.
Source：https://www.cbr.com/marvel-secret-empire-evaluation/
